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Event status: unconfirmed [?]

Reported quake or seismic-like event: 6.1 mi south of Bridgeton, Cumberland County, New Jersey, USA, Sunday, Nov 21, 2021 at 11:57 am (GMT -5) -

Reported quake or seismic-like event: 6.1 mi south of Bridgeton, Cumberland County, New Jersey, USA, Sunday, Nov 21, 2021 at 11:57 am (GMT -5) Reported quake or seismic-like event: 6.1 mi south of Bridgeton, Cumberland County, New Jersey, USA, Sunday, Nov 21, 2021 at 11:57 am (GMT -5)
21 Nov 17:02 UTC: First to report: VolcanoDiscovery after 5 minutes.

Earthquake details

Date & timeNov 21, 2021 16:57:06 UTC -
Local time at epicenterSunday, Nov 21, 2021 at 11:57 am (GMT -5)
Statusunconfirmed
Magnitudeunknown (3.8?)
Depth10.0 km
Epicenter latitude / longitude39.34378°N / 75.26898°W (Cumberland, New Jersey, United States)
Antipode39.344°S / 104.731°E
Shaking intensityWeak shaking
Felt480 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities6 km (4 mi) SW of Fairfield (pop: 1,260) | Show on map | Quakes nearby
10 km (6 mi) SSW of Bridgeton (pop: 25,000) | Show on map | Quakes nearby
21 km (13 mi) WSW of Millville (pop: 28,200) | Show on map | Quakes nearby
26 km (16 mi) SW of Vineland (pop: 60,800) | Show on map | Quakes nearby
40 km (25 mi) ESE of Middletown (Delaware) (pop: 20,400) | Show on map | Quakes nearby
45 km (28 mi) SSW of Williamstown (pop: 15,600) | Show on map | Quakes nearby
48 km (30 mi) SSW of Sewell (pop: 37,400) | Show on map | Quakes nearby
49 km (30 mi) SSW of Waretown (pop: 42,900) | Show on map | Quakes nearby
51 km (31 mi) SSE of Wilmington (Delaware) (pop: 71,900) | Show on map | Quakes nearby
160 km (100 mi) ENE of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 12.9°C (55 F), humidity: 77%, wind: 4 m/s (8 kts) from SSW
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Seismograms

Seismic station: Greenville, DE, USA (GEDE/LD network) | Distance from quake: 61 km / 38 mi | Show on map | Station Info
Seismic station Greenville, DE, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (682)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Newark, DE / Very weak shaking (MMI II) / single lateral shake / very short : It did not feel like a quake. It was a single boom that shook the house, not so much of the rumble of an earthquake. I've been in a couple of earthquakes and it was a different sensation. | 18 users found this interesting.  
  • I work from 7pm to 6am and I was in bed when my entire house shook from the ground up… I got up to check if a car struck my front porch or house and Thank God that was not the case. Along with the shaking was a weird noise that I can’t really explain.
  • leave your comment hereN.J. military base warns of ground-shaking explosions during 5 days of howitzer, mortar training Updated: Nov. 18, 2021, 11:53 a.m. | Published: Nov. 18, 2021, 11:53 a.m. Loud explosions at Joint Base McGuire-Dix-Lakehurst
  • It was a car explosion on summit Bridge rd in middletown, Delaware
  • Didn't seem like a quake either explosion,sonic boom,or meteor strike
  • I don't believe it was an eartquake. It was more like a boom from either an explosion or maybe even a sonic boom.
  • I only heard a loud boom around the Newark/Bear Route 40 corridor area. No movement though.
Bayberry North in Middletown / Very weak shaking (MMI II) / 1-2 s : I was in my bedroom and sounded like something hit my roof w/ a very loud boom. | 17 users found this interesting.  
  • Augustine Creek Middletown de We thought out she'd blew up the house rumbled like an explosion
Newark, Delaware, United States (55.9 km SSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : sitting on bed, suddently felt shaking | 11 users found this interesting.  
Bear, DE / Moderate shaking (MMI V) / single lateral shake / 1-2 s : Sitting on my couch when we felt and heard a loud boom. It sounded like a tree fell on my house or an explosion right outside my house. | 6 users found this interesting.  
Deptford NJ / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : Vibration in the floors, sound like long rumbling thunder that lasted almost half a minute or more. My dog joined a chorus of neighborhood dogs in sustained barking. | 5 users found this interesting.  
Quinton Township New Jersey (20.6 km NNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Sitting on the couch and felt the house rumble and heard the rumbling. Dog jumped up looking around. Checked on husband outside he also heard and felt rumbling. | 4 users found this interesting.  
19702 (48.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / vertical swinging (up and down) / 1-2 s : I was located on the 2nd floor of my home sitting. I thought a vehicle ran into the house. Confirmed sound on my doorbell camera and on a second door camera at another home 8 miles away. | 3 users found this interesting.  
Elkton, Md (55.4 km NW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : Not an earthquake. Large car explosion with tannerite. | 4 users found this interesting.  
19701 (41.1 km S of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : bear, DE. was just sitting in my family room and the house shook. | 4 users found this interesting.  
Middletown de 19709 (42 km WNW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / very short : We all felt a single heavy whump. The house felt like it jumped. Reminded me of the feel of an artillery shell going off under the house. Kinda like a close lightning strike but deeper. | 2 users found this interesting.  
  • I did read a report that there would be artillery tests being run all weekend at Ft Dix and surrounding area.
Middletown, DE (43.4 km WNW of epicenter) [Map] / Light shaking (MMI IV) / very short : Like someone hit the side of my house. | 3 users found this interesting.  
Wilmington, Delaware (53 km NNW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Felt the ground shake and heard what I assume were my windows rattling. Lasted around 1-2 seconds. | 3 users found this interesting.  
Saint Georges DE (40.5 km NW of epicenter) [Map] / Weak shaking (MMI III) : The timing of the earthquake was almost exactly when an explosive detonation occurred by Summit Bridge road in Middletown DE. I would venture to say that all reports of a single boom follow by a shake was from the explosion rather than the earthquake, but | One user found this interesting.  
133 Hedgewick Drive Newark, DE 19702 (48.8 km NW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Around noon, I heard a boom/crashing sound outisde of my home. It caused my house to rattle for 2 or 3 seconds. I thought maybe a train on the nearby tracks had crashed or overturned, however there was no train on the tracks at that time. | One user found this interesting.  
Newark, de / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Mostly a very short low ruble and the house rattled | 3 users found this interesting.  
near Selbyville, Sussex, Delaware (105.9 km S of epicenter) [Map] / not felt : My daughter and I felt a boom. | 2 users found this interesting.  
Pennsville NJ (39.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short : Little shake and noise. Walked outside and did not hear anything | 2 users found this interesting.  
08079 (32.1 km NW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Whole house shook and neighbor came outside to see what happen | 2 users found this interesting.  
Delaware City (37.5 km NW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : I felt my whole house shake like a tree fell onto my roof | 2 users found this interesting.  
Howell School Road / Light shaking (MMI IV) / single lateral shake / 2-5 s : On the road driving when I felt a big thump on the car, got home and family reported a somewhat loud boom and the house shook. We thought it was a gas explosion somewhere. | One user found this interesting.  
Bear, De / Very weak shaking (MMI II) / single vertical bump / very short : Was downstairs and it Felt like a very large piece of furniture fell over / was dropped on the 2nd floor of our house | One user found this interesting.  
Bear delaware / Light shaking (MMI IV) / single lateral shake / 1-2 s : Sounded like an explosion and shock wave shook all the houses on my street. Felt it less then a second | One user found this interesting.  
Middletown / Moderate shaking (MMI V) : Heard a loud boom with the house shaking. Lasted only a few seconds. Went outside and neighbor in yard heard/felt it too. Family member at a state park (Lums Pond) heard and felt also. | One user found this interesting.  
  • Never heard of Delaware having Earthquakes!? Blessings to you all and Please stay Safe over Yonder!!!
Middletown, DE (41.8 km WNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s : A loud booming sound was heard, followed by rattling of the floors and windows which continued for a few seconds.  
Bear De (44.1 km NW of epicenter) [Map] / Weak shaking (MMI III) : Sounded like an explosion. Or something hit the house. Neighbors came outside also to see what hit their house.  
Fairton NJ (7.3 km ENE of epicenter) [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / very short : I honestly thought it was me getting out of my car too fast. I kinda lost my balance and I even said to my kid “I don’t know what’s wrong with me I lost my balance” I’m assuming maybe it was this now. How strange.  
Millville (2.9 km WSW of epicenter) [Map] / not felt : Didn't feel it but our dog was showing signs of extreme anxiety. She does this with any impending weather.  
Middletown, DE (41.8 km WNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s : A loud booming sound was heard, followed by rattling of the floors and windows which continued for a few seconds.  
Middletown, DE (41.8 km WNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s : A loud booming sound was heard, followed by rattling of the floors and windows which continued for a few seconds.  
Bear De (44.1 km NW of epicenter) [Map] / Weak shaking (MMI III) : Sounded like an explosion. Or something hit the house. Neighbors came outside also to see what hit their house.  
19702 (48.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / vertical swinging (up and down) / 1-2 s : I was located on the 2nd floor of my home sitting. I thought a vehicle ran into the house. Confirmed sound on my doorbell camera and on a second door camera at another home 8 miles away.  
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